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Publication numberUS5967905 A
Publication typeGrant
Application numberUS 09/025,439
Publication dateOct 19, 1999
Filing dateFeb 17, 1998
Priority dateFeb 17, 1997
Fee statusLapsed
Publication number025439, 09025439, US 5967905 A, US 5967905A, US-A-5967905, US5967905 A, US5967905A
InventorsNorihiko Nakahara, Shinji Yamamoto, Shigeki Ono, Toru Yoshida
Original AssigneeThe Yokohama Rubber Co., Ltd., Mitsubishi Materials Corporation
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Golf club head and method for producing the same
US 5967905 A
Abstract
A golf club head comprises an outer titanium club-head shell, and a titanium sole portion integrally coupled to the outer club-head shell. A weight fitting hole is bored in the sole portion, and a plurality of cutouts are formed in the inner peripheral edge portion of the fitting hole. A weight made of metal having a specific gravity higher than that of titanium is inserted into the fitting hole, and the weight is fixed to the sole portion after press-deformed so that its outer peripheral edges are press-fitted into the respective cutouts. A method for producing a golf club head comprises the steps of molding the outer club-head shell from titanium, molding the sole portion having the weight fitting hole from titanium, forming the plurality of cutouts in the inner peripheral edge portion of the fitting hole of the sole portion, inserting the weight made of metal having a specific gravity higher than that of titanium into the fitting hole, fixing the weight to the sole portion by press-deforming the weight in such a way as to press-fit the outer peripheral edges of the weight into the respective cutouts, and coupling the outer club-head shell and the sole portion integrally by welding.
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Claims(12)
What is claimed is:
1. A golf club head comprising an outer titanium club-head shell, and a titanium sole portion integrally coupled to the outer club-head shell wherein a weight fitting hole is bored in said sole portion; a plurality of cutouts are formed in an inner peripheral edge portion of said fitting hole; a weight made of metal having a specific gravity higher than that of titanium is inserted into said fitting hole; and said weight is fixed to said sole portion by being press-deformed so that outer peripheral edges of the weight are press-fitted into said respective cutouts.
2. A golf club head as claimed in claim 1, wherein the inner peripheral edge portion of said fitting hole include inner and outer faces and is formed stepwise in the thickness direction of the sole portion; and said weight is press-deformed so that its outer peripheral edges clamp both the inner and outer faces of said inner peripheral edge portion.
3. A golf club head as claimed in claim 1, wherein said metal having a higher specific gravity is at least a metal selected from the group consisting of steel, nickel alloy and tungsten alloy.
4. A golf club head as claimed in claim 1, wherein a sealing material is poured into a gap between said fitting hole and said weight to seal up said gap.
5. A golf club head as claimed in claim 4, wherein said sealing material is metal solder.
6. A golf club head as claimed in claim 1 that is a wood type golf club head.
7. A golf club head as claimed in claim 1 that is an iron type golf club head.
8. A method for producing a golf club head comprising the steps of molding an outer club-head shell from titanium, molding a sole portion having a weight fitting hole from titanium, forming a plurality of cutouts in a inner peripheral edge portion of said fitting hole of said sole portion, inserting a weight made of metal having a specific gravity higher than that of titanium into said fitting hole, fixing said weight to said sole portion by press-deforming said weight in such a way as to press-fit outer peripheral edges of said weight into said respective cutouts, and coupling said outer club-head shell and said sole portion integrally by welding.
9. A method for producing a golf club head as claimed in claim 8, further comprising the steps of forming the inner peripheral edge portion of said fitting hole stepwise in the thickness direction of the sole portion, wherein said inner peripheral edge portion includes inner and outer faces; and press-deforming said weight so that its outer peripheral edges clamp both the inner and outer faces of said inner peripheral edge portion.
10. A method for producing a golf club head as claimed in claim 8, wherein said metal having a higher specific gravity is at least one metal selected from the group consisting of steel, nickel alloy and tungsten alloy.
11. A method for producing a golf club head as claimed in claim 8, further comprising the step of pouring a sealing material into a gap between said fitting hole and said weight to seal up said gap.
12. A method for producing a golf club head as claimed in claim 11, wherein said sealing material is metal solder.
Description
BACKGROUND OF THE INVENTION

The present invention relates to a golf club head and a method for producing the same, and more particularly to such a golf club head as a titanium golf club head whose sole portion can be fitted securely with a weight made of metal having a high specific gravity through simple fitting work and to a method for producing the same.

Heretofore, it has been attempted to lower the center of gravity by fitting to a sole portion a weight made of metal whose specific gravity is higher than that of titanium in the case of a typical conventional golf club head made of titanium having a low specific gravity.

Since titanium and metal having a high specific gravity for use in a weight are different kinds of metal, a brittle intermetallic compound tends to be formed when both of them are welded together and this has made it difficult to fit the weight by welding to the sole portion made of titanium. Consequently, the methods employed for fitting the weight to the sole portion have been to use clamping means such as bolts and nuts in general and to use such a metal material as an intermediate material weldable to both the sole portion and the weight.

However, the former method of using the clamping means requires not only using special bolts and nuts which are large and thin but also a great deal of trouble and time for fitting the weight to the sole portion, and makes the weight fitting strength insufficient.

The latter method of using the intermediate material between the sole portion and the weight needs to machine the intermediate material properly beforehand and to mount the weight on the intermediate material after mounting the intermediate material on the sole portion; the problem is that a great deal of trouble and time is also required during the assembling work.

SUMMARY OF THE INVENTION

An object of the present invention is to provide a golf club head and a method for producing the same that enable to facilitate the assembling work for fitting a weight made of metal other than titanium to a sole portion of the titanium golf club head, with the weight securely fixed to the sole portion.

In order to accomplish the object above, a golf club head according to the present invention comprises an outer titanium club-head shell, and a titanium sole portion integrally coupled to the outer club-head shell wherein a weight fitting hole is bored in the sole portion; a plurality of cutouts are formed in the inner peripheral edge portion of the fitting hole; a weight made of metal having a specific gravity higher than that of titanium is inserted into the fitting hole; and the weight is fixed to the sole portion after press-deformed so that its outer peripheral edges are press-fitted into the respective cutouts.

In order to accomplish the object above, a method for producing a golf club head according to the present invention comprises the steps of molding an outer club-head shell from titanium, molding a sole portion having a weight fitting hole from titanium, forming a plurality of cutouts in the inner peripheral edge portion of the fitting hole of the sole portion, inserting a weight made of metal having a specific gravity higher than that of titanium into the fitting hole, fixing the weight to the sole portion by press-deforming the weight in such a way as to press-fit the outer peripheral edges of the weight into the respective cutouts, and coupling the outer club-head shell and the sole portion integrally by welding.

According to the present invention, titanium is used as the general term for pure titanium and titanium alloy.

As set forth above, the plurality of cutouts are formed in the inner peripheral edge portion of the fitting hole, and the weight made of metal having the high specific gravity is inserted into the fitting hole and fixed to the sole portion after press-deformed so that its outer peripheral edges are press-fitted into the respective cutouts, whereby even when the titanium club head is fitted with the weight made of a different kind of metal, man-hours for machining are reduced with the effect of facilitating assembling work and besides the weight is deformed so that its outer peripheral edges bite into the respective cutouts to ensure that the weight is fixed to the sole portion because these cutouts function as detents of the weight.

In the present invention, further, a stair-like stepped portion extending in the thickness direction of the sole is formed in the inner peripheral edge portion of the fitting hole, and the weight is press-deformed so that its outer peripheral edges clamp both the inner and outer faces of the inner peripheral edge portion, whereby no gap is produced between the weight and the fitting hole. Thus, not only water but also dust is effectively prevented from penetrating into the club head.

Moreover, a sealing material is poured into the gap between the fitting hole and the weight to ensure that the weight is fixed to the sole portion even though the dimensional precision of the fitting hole and the weight is low. Thus, not only water but also dust is effectively prevented from penetrating into the club head, and an unpleasant noise to be caused by the vibration of the weight itself can also be prevented.

The present invention is applicable to both wood type and iron type golf club heads. According to the present invention, it is therefore possible to readily produce a wood type or an iron type golf club head whose center of gravity is lowered.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a vertical sectional side view of an exemplary wood type golf club head embodying the present invention;

FIG. 2 is a partial enlarged sectional view of the portion A of FIG. 1;

FIG. 3 is a plan view taken on an arrow B--B of FIG. 1 in such a state that no weight is fitted in; and

FIGS. 4(a)-4(f) illustrate steps of manufacturing a club head, and FIG. 4(g) a plan view taken on an arrow C--C of FIG. 4(d).

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

FIGS. 1-3 show an exemplary wood type golf club head embodying the present invention. As shown in FIGS. 1-3, the outer club-head shell 2 and the sole portion 3 of a club head body 1 are both molded from titanium, and the sole portion 3 is fitted by welding in the sole-side opening 2a of the outer club-head shell 2 so as to form a hollow structure. Incidentally, a plurality of members may be joined together by welding to form the outer club-head shell 2.

The fitting hole 5 for a weight 4 is provided in the sole portion 3, and a cutout 6 in the form of a recess is cut in a plurality of places (four places in this embodiment) of the inner peripheral edge portion 5a of the fitting hole 5. The weight 4 made of metal having a high specific gravity such as tungsten alloy is inserted into the fitting hole 5 of the weight 4 and then deformed by pressing from both sides of the sole portion 3 by means of a press or the like so that the outer peripheral edges of the weight 4 are press-fitted into the respective cutouts 6, whereby the weight 4 is fixed to the sole portion 3. The length of the cutouts 6 in the circumferencial direction of the fitting hole 5 may be increased so that the cutouts 6 occupy most of the inner peripheral edge portion 5a as if protrusions between the cutouts 6 were formed on the inner peripheral edge portion 5a.

Even when the weight 4 made of metal other than titanium is thus fitted in the club head made of titanium, the fitting work can simply be done through the steps of providing the fitting hole 5 for the weight 4 in the sole portion 3, forming the plurality of cutouts 6 in the inner peripheral edge portion 5a of the fitting hole 5, inserting the weight 4 made of metal having a high specific gravity into the fitting hole 5, press-deforming the weight 4 and fixing the deformed weight 4 to the sole portion 3. Since the weight 4 is deformed by the press or the like in such a way as to make its outer peripheral edges bite into the respective cutouts 6, the cutouts 6 function as detents of the weight 4 to ensure that the weight 4 is fixed firmly to the sole portion 3.

The weight 4 is preferably circular in cross section because it can be machinable with the highest precision. In order to give the disk-like weight 4 a detent function with respect to the fitting hole 5, it is preferred to make such a cutout 6 in at least more than one place. The plurality of cutouts 6 are thus provided for the fitting hole 5 to ensure that the weight 4 is fixed to the sole portion 3 while the weight 4 is prevented from rotational displacement even though it is circular in cross section into which it can be machinable with the highest precision.

Metal materials which are readily deformable when press-deformed by a press or the like such as steel, nickel alloy, for example, Inconel (Trademark, INCO LTD.), and tungsten alloy containing iron are usable for the weight 4, so that the weight 4 bites into the cutouts 6 when deformed.

Further, a stair-like stepped portion 7 extending in the thickness direction of the sole is formed in the inner peripheral edge portion 5a of the fitting hole 5 as shown in FIG. 2. The stair-like stepped portion 7 has inner diameters different from each other at two stages at least in that the inner diameter situated on the outer side of the sole is set greater than what is situated on the inner side of the sole. Then, the outer peripheral edges of the weight 4 thus press-deformed are caused to clamp both the inner and outer faces of the inner peripheral edge portion 5a of the fitting hole 5.

There may develop a gap between the weight 4 and the fitting hole 5 when a predetermined curvature is imparted to the sole portion 3 after the disk-like weight 4 is fixed to the sole portion 3. However, the formation of the stair-like stepped portion 7 in the inner peripheral edge portion 5a of the fitting hole 5 as stated above results in elongating the outer peripheral edges of the weight 4 thus press-deformed in the facial direction of the sole portion 3 so as to cover the gap between the weight 4 and the fitting hole 5, whereby it is possible to effectively prevent dust from being caught in the gap or water from penetrating into the club head.

Moreover, such a gap can be sealed up by pouring a sealing material into the gap produced between the fitting hole 5 and the weight 4. When the weight 4 is integrally secured to the sole portion 3 by pouring the sealing material into the gap between the fitting hole 5 and the weight 4, the weight 4 can be secured rigidly even though the dimensional accuracy of the fitting hole 5 and the weight 4 is low. Consequently, water, dust and the like are effectively prevented from penetrating into the club head. Moreover, the generation of unpleasant sound due to the vibration of the weight itself becomes preventable.

As the sealing material, use can be made of metal solder, adhesive material, paint and the like. The metal solder preferred for use is brazing filler metal (with a melting temperature of 450 or higher) available on the market now, which filler metal has sufficient strength after hardened and fixed and is not melted by heat generated when an outer titanium wall is formed by welding, the sealing material including silver solder, German silver solder, manganese solder, iron solder, aluminum solder and so forth in the range of melting temperatures of 600 C. to 900 C. in consideration of workability. Incidentally, silver solder is employed according to this embodiment of the present invention as what is most preferred for use in view of fluidity. It is however needed to select a proper soldering material and flux in accordance with the material used for the weight.

Although a description has been given of a wood type golf club head in the above-described embodiment of the present invention, the invention is also applicable to a hollow iron type golf club head.

A method for producing the golf club head will subsequently be described by referring to FIGS. 4(a)-4(g). As shown in FIG. 4(a) first, the outer club-head shell 2 and the sole portion 3 having the fitting hole 5 for the weight 4 are molded from titanium by forging, pressing (punching) or the like.

As shown in FIGS. 4(b) and 4(c), the sole portion 3 is subjected to pressing in order to form the stair-like stepped portion 7 on the outer face side of the inner peripheral edge portion 5a of the fitting hole 5, and a slope 7a on the inner face side of the sole of the inner peripheral edge portion 5a. As shown in FIGS. 4(d)-4(g) further, a plurality of cutouts 6 in the form of a recess are formed at intervals of 90 in the inner peripheral edge portion 5a protruding inward in the diametrical direction between the stepped portion 7 and the slope 7a.

As shown in FIG. 4(e) further, the weight 4 made of metal having a high specific gravity is fitted into the fitting hole 5 before being subjected to pressing by means of pressing means 8a, 8b. As shown in FIG. 4(f), the weight 4 can be fixed firmly to the sole portion 3 then because the outer peripheral edges of the weight 4 thus press-deformed bite into the respective cutouts 6. Since the outer peripheral edges of the weight 4 simultaneously elongate in the facial direction of the sole portion 3 so as to cover the gap between the weight 4 and the fitting hole 5, dust is prevented from being caught in the gap and water is also prevented from penetrating into the club head. Moreover, the overhanging portion 9 of the weight 4 may be caulked to ensure that even though the weight 4 becomes large-sized, it is rigidly secured to the sole portion 3.

Further, it is possible to seal up the gap produced between the fitting hole 5 and the weight 4 as occasion demands by pouring a sealing material into the gap after the weight 4 is press-deformed. The sealing material is thus poured into the gap between the fitting hole 5 and the weight 4 to fix the weight 4 firmly and integrally to the sole portion in this manner to ensure that even though the dimensional precision of the fitting hole 5 and the weight 4 is low, the weight 4 is firmly fixed to the sole portion 3. Moreover, not only water but also dust is effectively prevented from penetrating into the club head and besides the generation of unpleasant sound due to the vibration of the weight itself becomes preventable. The weight 4 is also effectively prevented from slipping off the sole portion 3 by applying lap fillet welding 10 to the overhanging portion 9 of the weight 4.

Subsequently, as shown in FIG. 4(f), the sole portion 3 is bent with a predetermined curvature so that the stepped portion 7 is situated on the outer face side of the sole. The sole portion 3 thus formed is integrally fitted by welding to the sole-side opening 2a of the outer club-head shell 2.

The golf club head is thus produced through the above-described method, so that even when the weight 4 made of metal different from what forms the club head is fitted to the club head mainly made of titanium or titanium alloy, man-hours for machining are reducible with the effect of facilitating assembling work to ensure that the weight 4 is fixed to the sole portion 3.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US4630825 *Dec 17, 1984Dec 23, 1986Glenn H. SchmidtGolf clubs
US4795159 *Jul 8, 1987Jan 3, 1989Yamaha CorporationWood-type golf club head
US5294037 *Apr 19, 1993Mar 15, 1994Karsten Manufacturing CorporationMethod of assembling a metal golf club head
US5564705 *May 27, 1994Oct 15, 1996K.K. Endo SeisakushoGolf club head with peripheral balance weights
US5658207 *Mar 22, 1995Aug 19, 1997Daiwa Seiko, Inc.Golf club head
US5669825 *Feb 1, 1995Sep 23, 1997Carbite, Inc.Method of making a golf club head and the article produced thereby
US5720673 *Nov 20, 1996Feb 24, 1998Pacific Golf HoldingsStructure and process for affixing a golf club head insert to a golf club head body
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US6146287 *Dec 1, 1998Nov 14, 2000Taylor Made Golf Company, Inc.Golf club head with weighted sole in stiffened region
US6162132 *May 17, 1999Dec 19, 2000Yonex Kabushiki KaishaGolf club head having hollow metal shell
US6206789 *Jun 28, 1999Mar 27, 2001K.K. Endo SeisakushoGolf club
US6254494 *Jan 28, 1999Jul 3, 2001Bridgestone Sports Co., Ltd.Golf club head
US6340337Mar 13, 2001Jan 22, 2002Bridgestone Sports Co., Ltd.Golf club head
US6508722Jan 31, 2000Jan 21, 2003Acushnet CompanyGolf club head and improved casting method therefor
US6520868 *Mar 9, 2001Feb 18, 2003Archer C. C. ChenGolf club head of steel alloy
US6572491Mar 13, 2001Jun 3, 2003Bridgestone Sports Co., Ltd.Golf club head
US6595057Apr 10, 2002Jul 22, 2003Acushnet CompanyGolf club head with a high coefficient of restitution
US6605007Apr 18, 2000Aug 12, 2003Acushnet CompanyGolf club head with a high coefficient of restitution
US6773360Nov 8, 2002Aug 10, 2004Taylor Made Golf Company, Inc.Golf club head having a removable weight
US6860818 *Mar 4, 2003Mar 1, 2005Callaway Golf CompanyGolf club head with peripheral weighting
US6881158 *Jul 24, 2003Apr 19, 2005Fu Sheng Industrial Co., Ltd.Weight number for a golf club head
US7101291 *Sep 24, 2003Sep 5, 2006Sri Sports LimitedGolf club head
US7166040Feb 23, 2004Jan 23, 2007Taylor Made Golf Company, Inc.Removable weight and kit for golf club head
US7186190Feb 25, 2005Mar 6, 2007Taylor Made Golf Company, Inc.Golf club head having movable weights
US7223180Aug 6, 2004May 29, 2007Taylor Made Golf Company, Inc.Golf club head
US7326472Nov 16, 2004Feb 5, 2008Bridgestone Sports Co., Ltd.Golf club head
US7351163 *May 16, 2003Apr 1, 2008Bridgestone Sports Co., Ltd.Golf club head
US7407447Feb 23, 2005Aug 5, 2008Taylor Made Golf Company, Inc.Movable weights for a golf club head
US7410425Dec 28, 2006Aug 12, 2008Taylor Made Golf Company, Inc.Golf club head having removable weight
US7410426Dec 29, 2006Aug 12, 2008Taylor Made Golf Company, Inc.Golf club head having removable weight
US7419441Feb 24, 2005Sep 2, 2008Taylor Made Golf Company, Inc.Golf club head weight reinforcement
US7448963Jan 31, 2007Nov 11, 2008Taylor Made Golf Company, Inc.Golf club head having movable weights
US7530904Jan 31, 2007May 12, 2009Taylor Made Golf Company, Inc.Golf club head having movable weights
US7540811Jan 31, 2007Jun 2, 2009Taylor Made Golf Company, Inc.Golf club head having movable weights
US7568985Jan 31, 2007Aug 4, 2009Taylor Made Golf Company, Inc.Golf club head having movable weights
US7578753Jan 31, 2007Aug 25, 2009Taylor Made Golf Company, Inc.Golf club head having movable weights
US7591738Jan 31, 2007Sep 22, 2009Taylor Made Golf Company, Inc.Golf club head having movable weights
US7611424Feb 12, 2007Nov 3, 2009Mizuno Usa, Inc.Golf club head and golf club
US7621823Jan 31, 2007Nov 24, 2009Taylor Made Golf Company, Inc.Golf club head having movable weights
US7628707Dec 8, 2009Taylor Made Golf Company, Inc.Golf club information system and methods
US7632194Dec 15, 2009Taylor Made Golf Company, Inc.Movable weights for a golf club head
US7651410 *Jan 26, 2010Bridgestone Sports Co., Ltd.Golf club head
US7682262Mar 23, 2010Acushnet CompanyMetal wood club with improved hitting face
US7704162Sep 7, 2005Apr 27, 2010Acushnet CompanyMetal wood club with improved hitting face
US7713142Jan 25, 2008May 11, 2010Taylor Made Golf Company, Inc.Golf club head weight reinforcement
US7717804Jan 31, 2007May 18, 2010Taylor Made Golf Company, Inc.Golf club head having movable weights
US7717805Jan 31, 2007May 18, 2010Taylor Made Golf Company, Inc.Golf club head having movable weights
US7717807 *Sep 2, 2008May 18, 2010Callaway Golf CompanyGolf club head with tungsten alloy sole applications
US7731603Sep 27, 2007Jun 8, 2010Taylor Made Golf Company, Inc.Golf club head
US7744484Sep 19, 2006Jun 29, 2010Taylor Made Golf Company, Inc.Movable weights for a golf club head
US7753806Jul 13, 2010Taylor Made Golf Company, Inc.Golf club
US7762907Jun 19, 2009Jul 27, 2010Acushnet CompanyMetal wood club with improved hitting face
US7771291Aug 10, 2010Taylor Made Golf Company, Inc.Golf club head with vertical center of gravity adjustment
US7775905Dec 19, 2006Aug 17, 2010Taylor Made Golf Company, Inc.Golf club head with repositionable weight
US7775907 *Aug 17, 2010Sri Sports LimitedMethod for manufacturing golf club head
US7781119Apr 22, 2005Aug 24, 2010Gm Global Technology Operations, Inc.Flow shifting in each individual cell of a fuel cell stack
US7815524Feb 17, 2006Oct 19, 2010Pelican Golf, Inc.Golf clubs
US7846041Dec 7, 2010Taylor Made Golf Company, Inc.Movable weights for a golf club head
US7850541May 20, 2009Dec 14, 2010Acushnet CompanyComposite metal wood club
US7850543Mar 16, 2009Dec 14, 2010Acushnet CompanyMetal wood club with improved hitting face
US7850544Dec 14, 2010Acushnet CompanyComposite metal wood club
US7887434May 17, 2010Feb 15, 2011Taylor Made Golf Company, Inc.Golf club
US7892109May 22, 2009Feb 22, 2011Acushnet CompanyMetal wood club with improved hitting face
US7927229 *Aug 29, 2008Apr 19, 2011Karsten Manufacturing CorporationGolf club heads and methods to manufacture the same
US7931545Mar 22, 2010Apr 26, 2011Acushnet CompanyMetal wood club with improved hitting face
US7935001May 3, 2011Acushnet CompanyComposite metal wood club
US7963861Jun 21, 2011Taylor Made Golf Company, Inc.Golf club head having movable weights
US7980963Jan 27, 2010Jul 19, 2011Acushnet CompanyMetal wood club with improved hitting face
US8007372Sep 21, 2010Aug 30, 2011Cobra Golf, Inc.Golf club head with localized grooves and reinforcement
US8016694Nov 1, 2009Sep 13, 2011Mizuno UsaGolf club head and golf clubs
US8025590Nov 22, 2010Sep 27, 2011Acushnet CompanyMetal wood club with improved hitting face
US8038544Oct 18, 2011Acushnet CompanyComposite metal wood club
US8042253 *Jan 22, 2009Oct 25, 2011Chi-Hung SuMethod of manufacturing a golf club head, of the wood type, by assembling welding, and finish grinding the weld joints
US8047930Nov 1, 2011Acushnet CompanyMetal wood club with improved hitting face
US8118689Jan 20, 2011Feb 21, 2012Taylor Made Golf Company, Inc.Golf club
US8128509Apr 25, 2011Mar 6, 2012Acushnet CompanyMetal wood club with improved hitting face
US8262502Sep 11, 2012Acushnet CompanyMetal wood club with improved hitting face
US8262507Jul 12, 2010Sep 11, 2012Taylor Made Golf Company, Inc.Golf club head with vertical center of gravity adjustment
US8277334Oct 2, 2012Acushnet CompanyComposite metal wood club
US8337328 *Apr 14, 2010Dec 25, 2012Callaway Golf CompanyGolf club head with tungsten alloy sole component
US8342982Jan 1, 2013Acushnet CompanyMetal wood club with improved hitting face
US8353786Jan 15, 2013Taylor Made Golf Company, Inc.Golf club head
US8430763May 10, 2012Apr 30, 2013Taylor Made Golf Company, Inc.Fairway wood center of gravity projection
US8439769May 14, 2013Acushnet CompanyMetal wood club with improved hitting face
US8444505May 21, 2013Taylor Made Golf Company, Inc.Golf club head with repositionable weight
US8449407May 28, 2013Acushnet CompanyMetal wood club with improved hitting face
US8517858Apr 15, 2010Aug 27, 2013Acushnet CompanyMetal wood club
US8562457May 27, 2011Oct 22, 2013Taylor Made Golf Company, Inc.Golf club head having movable weights
US8579725Sep 7, 2012Nov 12, 2013Taylor Made Golf Company, Inc.Golf club head with vertical center of gravity adjustment
US8591353Dec 17, 2012Nov 26, 2013Taylor Made Golf Company, Inc.Fairway wood golf club head
US8647216May 6, 2010Feb 11, 2014Taylor Made Golf Company, Inc.Golf club head
US8663029Feb 21, 2012Mar 4, 2014Taylor Made Golf CompanyGolf club
US8684863Dec 27, 2011Apr 1, 2014Acushnet CompanyGolf club having removable weight
US8734271May 20, 2013May 27, 2014Taylor Made Gold Company, Inc.Golf club head with repositionable weight
US8753222Apr 29, 2013Jun 17, 2014Taylor Made Golf Company, Inc.Fairway wood center of gravity projection
US8801541Jun 10, 2010Aug 12, 2014Taylor Made Golf Company, Inc.Golf club
US8821312Feb 15, 2012Sep 2, 2014Taylor Made Golf Company, Inc.Golf club head having a stress reducing feature with aperture
US8827831Jul 5, 2012Sep 9, 2014Taylor Made Golf Company, Inc.Golf club head having a stress reducing feature
US8870678Oct 7, 2013Oct 28, 2014Taylor Made Golf Company, Inc.Golf club head with repositionable weight
US8888607Mar 14, 2013Nov 18, 2014Taylor Made Golf Company, Inc.Fairway wood center of gravity projection
US8888609Aug 6, 2013Nov 18, 2014Taylor Made Golf Company, Inc.Golf club head having movable weights
US8900069Dec 27, 2011Dec 2, 2014Taylor Made Golf Company, Inc.Fairway wood center of gravity projection
US8900072Oct 31, 2013Dec 2, 2014Taylor Made Golf Company, Inc.Golf club head with vertical center of gravity adjustment
US8951143 *Jan 18, 2013Feb 10, 2015Karsten Manufacturing CorporationGolf club weight attachment mechanisms and related methods
US8956240Aug 23, 2013Feb 17, 2015Taylor Made Golf Company, Inc.Fairway wood center of gravity projection
US9011267Jan 29, 2013Apr 21, 2015Taylor Made Golf Company, Inc.Golf club head having a stress reducing feature and shaft connection system socket
US9017186May 22, 2013Apr 28, 2015Karsten Manufacturing CorporationClub heads with multiple density weighting and methods of manufacturing the same
US9089748Jan 18, 2013Jul 28, 2015Karsten Manufacturing CorporationGolf club weight attachment mechanisms and related methods
US9089749Mar 15, 2013Jul 28, 2015Taylor Made Golf Company, Inc.Golf club head having a shielded stress reducing feature
US9095753Dec 30, 2013Aug 4, 2015Acushnet CompanyGolf club having removable weight
US9168428Apr 18, 2014Oct 27, 2015Taylor Made Golf Company, Inc.Hollow golf club head having sole stress reducing feature
US9168431Oct 23, 2013Oct 27, 2015Taylor Made Golf Company, Inc.Fairway wood golf club head
US9168434Aug 29, 2014Oct 27, 2015Taylor Made Golf Company, Inc.Golf club head having a stress reducing feature with aperture
US9174101Aug 1, 2014Nov 3, 2015Taylor Made Golf Company, Inc.Golf club head having a stress reducing feature
US9186560Sep 24, 2014Nov 17, 2015Taylor Made Golf Company, Inc.Golf club
US9205311 *Aug 5, 2013Dec 8, 2015Karsten Manufacturing CorporationClub head with sole mass element and related method
US9205312Dec 31, 2013Dec 8, 2015Acushnet CompanyGolf club having removable weight
US9211447Apr 30, 2015Dec 15, 2015Taylor Made Golf Company, Inc.Golf club
US9216333Mar 21, 2014Dec 22, 2015Acushnet CompanyGolf club having removable weight
US9220953May 10, 2012Dec 29, 2015Taylor Made Golf Company, Inc.Fairway wood center of gravity projection
US9220956Mar 4, 2014Dec 29, 2015Taylor Made Golf Company, Inc.Golf club
US9238162Apr 25, 2014Jan 19, 2016Cobra Golf IncorporatedGolf club with adjustable weight assembly
US9265993Oct 31, 2013Feb 23, 2016Taylor Made Golf Company, IncHollow golf club head having crown stress reducing feature
US9358434Sep 27, 2010Jun 7, 2016Pelican Gold, Inc.Golf clubs
US9381410May 7, 2014Jul 5, 2016Acushnet CompanyMetal wood club
US20030232659 *Mar 4, 2003Dec 18, 2003Spalding Sports Worldwide, Inc.Golf club head with peripheral weighting
US20030236132 *Jun 10, 2003Dec 25, 2003Burrows Bruce D.Golf club head with porous sole plate
US20030236133 *May 16, 2003Dec 25, 2003Bridgestone Sports Co., Ltd.Golf club head
US20040067799 *Sep 24, 2003Apr 8, 2004Akio YamamotoGolf club head
US20040138005 *Jan 13, 2003Jul 15, 2004Fu Sheng Industrial Co., Ltd.Golf club head with a visually examinable interior
US20040242343 *Feb 23, 2004Dec 2, 2004Taylor Made Golf Company, Inc.Removable weight and kit for golf club head
US20050020377 *Jul 24, 2003Jan 27, 2005Shun-Fa YangWeight member for a golf club head
US20050181884 *Dec 28, 2004Aug 18, 2005Taylor Made Golf Company, Inc.Golf club information system and methods
US20050187034 *Apr 13, 2005Aug 25, 2005Rice Scott A.Metal wood club with improved hitting face
US20070129169 *Dec 4, 2006Jun 7, 2007Bridgestone Sports Co., Ltd.Golf club head
US20070173347 *Dec 28, 2006Jul 26, 2007Taylor Made Golf Company, Inc.Golf club head having removable weight
US20070219018 *Feb 26, 2007Sep 20, 2007Sri Sports LimitedMethod for manufacturing golf club head
US20070293347 *Jun 20, 2006Dec 20, 2007Shanghai Precision Technology CorporationIntegrated structure of golf club head and striking face
US20080178458 *Dec 19, 2007Jul 31, 2008Advanced International Multitech Co.,LtdGolf club head joining method
US20080194354 *Feb 12, 2007Aug 14, 2008Mizuno UsaGolf club head and golf club
US20090005192 *Aug 21, 2007Jan 1, 2009Advanced International Multitech Co., Ltd.Weighted Part of Golf Club Head
US20090005193 *Jun 18, 2008Jan 1, 2009Advanced International Multitech Co., Ltd.Weighted part of golf club head
US20090069114 *Sep 5, 2008Mar 12, 2009Callaway Golf CompanyGolf club head with tungsten alloy sole component
US20090082135 *Sep 2, 2008Mar 26, 2009Callaway Golf CompanyGolf club head with tungsten alloy sole applications
US20100056298 *Aug 29, 2008Mar 4, 2010Jertson Marty RGolf Club Heads and Methods to Manufacture the Same
US20100180421 *Jan 22, 2009Jul 22, 2010Chi-Hung SuMethod for manufacturing a club head
US20100190574 *Apr 14, 2010Jul 29, 2010Callaway Golf CompanyGolf club head with tungsten alloy sole component
US20100292027 *Nov 18, 2010Taylor Made Golf Company, Inc.Golf club head with repositionalbe weight
US20110009209 *Nov 1, 2009Jan 13, 2011Mizuno UsaGolf club head and golf clubs
US20130130831 *Jan 18, 2013May 23, 2013Karsten Manufacturing CorporationGolf club weight attachment mechanisms and related methods
US20140248976 *Aug 5, 2013Sep 4, 2014Karsten Manufacturing CorporationClub head with sole mass element and related method
US20150251371 *May 4, 2015Sep 10, 2015Rolls-Royce PlcMethod of sealing cooling holes
USRE41116 *Feb 16, 2010Taylor Made Golf Co., Inc.Golf club weight
Classifications
U.S. Classification473/345, 473/349, 473/409
International ClassificationA63B53/04
Cooperative ClassificationA63B53/04, A63B2053/0491, A63B2053/0433, A63B2209/00, A63B53/0466, A63B53/047
European ClassificationA63B53/04
Legal Events
DateCodeEventDescription
Feb 17, 1998ASAssignment
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Owner name: MITSUBISHI MATERIALS CORPORATION, JAPAN
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:NAKAHARA, NORIHIKO;YAMAMOTO, SHINJI;ONO, SHIGEKI;AND OTHERS;REEL/FRAME:008991/0400
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Year of fee payment: 4
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Sep 17, 2003ASAssignment
Owner name: YOKOHAMA RUBBER CO., LTD., THE, JAPAN
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:MITSUBISHI MATERIALS CORPORATION;REEL/FRAME:014506/0403
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May 9, 2007REMIMaintenance fee reminder mailed
Oct 19, 2007LAPSLapse for failure to pay maintenance fees
Dec 11, 2007FPExpired due to failure to pay maintenance fee
Effective date: 20071019